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spicuons of them are the small, vice-shaped ones, wliich are mostly, 

 though not entirely, confined to the poriferous areas and stick out 

 only like so many prickles above the general surface (PL XVI, fig. 

 249). The second form is that of small, valvate pedicellarige, 

 wliich are either round or slightly elongated in a transverse direc- 

 tion, and are entirely confined to the surface of the plates (PI. 

 XVI, fig. 250). The pedicellariœ of the third form are intermediate 

 between the other two ; they are very small, and are nearly 

 round in outline when viewed directly from above (PL XVI, fig. 

 251) ; they are also confined to the surface of the plates. 



The poriferous areas are very irregular in size and shape, 

 corresponding to the irregular form of the plates ; the pores are 

 very distinct in the dried specimen, and vary greatly in number 

 according to the size of the areas in which they are found. Near 

 the tip of the arms there are only a few between the rounded 

 plates, but in one of the larger areas near the centre of the disk 

 there may be as many as sixty or more. 



Madreporite. — The madreporite is comparatively large but not 

 very conspicuous, owing to the flatness of its surface, which lies 

 in a level with the general surface of the body ; it is elliptical in 

 outline, with very fine convoluted farrows on the surface, and is 

 situated well out of the central pentagon formed by the apical 

 tubercles. 



Terminal xjlate. — The terminal plate is small, rounded in out- 

 line, and entirely covered over with grannies exactly similar to 

 those of the superomarginals. 



Locality. — Koniya in Amami-Oshima, Linschoten Islands. Lit- 

 toral. The dried specimen was light brick- coloured. 



This species is named in honour of Prof. L. Dödeelein of 



